No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Docsis Cable Modem not coming Online

Publication Date:  2014-06-25 Views:  438 Downloads:  0
Issue Description
Cable modem Docsis 2.0 and Docsis 3.0 not coming online

MA5633(config)#display cable modem all
{ <cr>|cpe<K>|detail<K>|ipv6<K>|sort-index<K>|sort-mac<K>|sort-state<K>|voice<K>||<K> }:

  Command:
          display cable modem all
-------------------------------------------------------------------------------
Idx   MAC            IP               I/F         Status   Prim  Num Ver  DS RX
                                                            SID   CPE      Power
-------------------------------------------------------------------------------
1     94CC-B9CE-BA24 10.24.1.204      0/1/0/U3    DHCP-C   1     0   D2.0 -   
-------------------------------------------------------------------------------
Total: 1
ol: 0, ol-ptd: 0, ol-pt: 0, ol-d: 0, wol: 0, wol-ptd: 0, wol-pt: 0, wol-d: 0,  pol: 0, pol-ptd: 0, pol-pt: 0, pol-d: 0, offline: 0, rej-m: 0, rej-pt: 0, rej-o: 0, init: 0, init-rc: 0, DHCP: 0, DHCP-O: 0, DHCP-R: 0, DHCP-C: 1, REG: 0,
DHCPv6: 0, DHCPv6-A: 0, DHCPv6-R: 0, DHCPv6-C: 0, TFTPv4-S: 0, TFTPv4-C: 0

IP statistics: ipv4-only: 1, ipv6-only: 0, dual-ip: 0, no-ip: 0

Note: 1. Idx is the index of a CM.
       2. The downstream received power is in the unit of dBmV.
       3. In status, "ol" means online, "rej" means reject.
       4. In IP column, "*" means that CM has an IPv6 address.
Alarm Information
Cable modem Online LED not stable
Handling Process

1. Check the Status of the CM on MA5633
2. Enable Mirror on downstream
3. Check the packet
4. Enable TFTP proxy
5. Check the status of cable modem
Root Cause
In packets capture the tftp server ip was wrong
Suggestions
Check the Status of the CM on MA5633

MA5633(config)#display cable modem all
{ <cr>|cpe<K>|detail<K>|ipv6<K>|sort-index<K>|sort-mac<K>|sort-state<K>|voice<K>||<K> }:

  Command:
          display cable modem all
-------------------------------------------------------------------------------
Idx   MAC            IP               I/F         Status   Prim  Num Ver  DS RX
                                                            SID   CPE      Power
-------------------------------------------------------------------------------
1     94CC-B9CE-BA24 10.24.1.204      0/1/0/U3    DHCP-C   1     0   D2.0 -  
-------------------------------------------------------------------------------
Total: 1
ol: 0, ol-ptd: 0, ol-pt: 0, ol-d: 0, wol: 0, wol-ptd: 0, wol-pt: 0, wol-d: 0,  pol: 0, pol-ptd: 0, pol-pt: 0, pol-d: 0, offline: 0, rej-m: 0, rej-pt: 0, rej-o: 0, init: 0, init-rc: 0, DHCP: 0, DHCP-O: 0, DHCP-R: 0, DHCP-C: 1, REG: 0,
DHCPv6: 0, DHCPv6-A: 0, DHCPv6-R: 0, DHCPv6-C: 0, TFTPv4-S: 0, TFTPv4-C: 0

IP statistics: ipv4-only: 1, ipv6-only: 0, dual-ip: 0, no-ip: 0

Note: 1. Idx is the index of a CM.
       2. The downstream received power is in the unit of dBmV.
       3. In status, "ol" means online, "rej" means reject.
       4. In IP column, "*" means that CM has an IPv6 address.

####
Capture packets on the downstream // enable mirror
####
MA5633(config)#diagnose

MA5633(diagnose)%%display mirror
  Failure: No mirror exists

MA5633(diagnose)%%


MA5633(diagnose)%%mirror port 0/1/0 meth all

MA5633(diagnose)%%display mirror
  ------------------------------------------------
  Source port      Direction      Destination port
  ------------------------------------------------
       0/1/ 0      all                        meth
  ------------------------------------------------


####
Check the packet
####
in packets the tftp server IP was MA5633 IP

###
Enable TFTP proxy
###

MA5633(config)#display cable tftp proxy 0/1/0
    ----------------------------------
    F/S/P                  Tftp Proxy
    ----------------------------------
    0/1/0                  disable
    ----------------------------------

MA5633(config)#cable tftp proxy 0/1/0 enable

MA5633(config)#display cable tftp proxy 0/1/0
    ----------------------------------
    F/S/P                  Tftp Proxy
    ----------------------------------
    0/1/0                  enable
    ----------------------------------

###Check the status of cable modem###

MA5633(config)#display cable modem all
{ <cr>|cpe<K>|detail<K>|ipv6<K>|sort-index<K>|sort-mac<K>|sort-state<K>|voice<K>||<K> }:

  Command:
          display cable modem all
-------------------------------------------------------------------------------
Idx   MAC            IP               I/F         Status   Prim  Num Ver  DS RX
                                                            SID   CPE      Power
-------------------------------------------------------------------------------
1     94CC-B9CE-BA24 10.24.1.204      0/1/0/U3    ol       1     0   D2.0 -  
-------------------------------------------------------------------------------
Total: 1
ol: 1, ol-ptd: 0, ol-pt: 0, ol-d: 0, wol: 0, wol-ptd: 0, wol-pt: 0, wol-d: 0,  pol: 0, pol-ptd: 0, pol-pt: 0, pol-d: 0, offline: 0, rej-m: 0, rej-pt: 0, rej-o: 0, init: 0, init-rc: 0, DHCP: 0, DHCP-O: 0, DHCP-R: 0, DHCP-C: 0, REG: 0,
DHCPv6: 0, DHCPv6-A: 0, DHCPv6-R: 0, DHCPv6-C: 0, TFTPv4-S: 0, TFTPv4-C: 0

IP statistics: ipv4-only: 1, ipv6-only: 0, dual-ip: 0, no-ip: 0

Note: 1. Idx is the index of a CM.
       2. The downstream received power is in the unit of dBmV.
       3. In status, "ol" means online, "rej" means reject.
       4. In IP column, "*" means that CM has an IPv6 address.

END